Re: 300 rum loads with 220 SMK. anyone with any luck?
I have a rem bdl ss, I use this same load with 91grs, but my velocity is just over 2900, thats weird. I shoot it single shot as well at 3.75". I get sub .75 on all groups and have shot several under .5". Have loaded some with retumbo but not nearly as tight. Good luck!